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Does the zero lift axis depend on airspeed? I think the article should answer this question. — Preceding unsigned comment added by 188.8.131.52 (talk) 05:48, 22 January 2015
In any incompressible flow around an airfoil there is no reason to expect the orientation of the zero-lift axis to vary with different flow speeds. In transonic, sonic and supersonic flows around an airfoil the orientation of the zero-lift axis is likely to vary with Mach number. I haven't looked for a published source for my views. Dolphin(t) 06:14, 22 January 2015 (UTC)